CN105390911B - The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber - Google Patents
The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber Download PDFInfo
- Publication number
- CN105390911B CN105390911B CN201510726091.1A CN201510726091A CN105390911B CN 105390911 B CN105390911 B CN 105390911B CN 201510726091 A CN201510726091 A CN 201510726091A CN 105390911 B CN105390911 B CN 105390911B
- Authority
- CN
- China
- Prior art keywords
- wide
- laser
- band couplers
- fiber
- thulium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Lasers (AREA)
Abstract
The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber, belong to laser manufacturing technology field, it is shorter in order to solve dual wavelength interval in 2 mu m waveband dual wavelength fibre lasers, easily by the defect of external interference, the laser device laser diode pumping source connects with fiber amplifier, fiber amplifier output end is connected with wavelength division multiplexer, and wavelength division multiplexer is connected with thulium doped fiber, thulium doped fiber and 50:50 wide-band couplers are connected, and 50:50 wide-band couplers are connected with multiple-mode interfence filter, and 50:50 wide-band couplers are connected with multiple-mode interfence filter, to make Sagnac rings be cascaded with multiple-mode interfence filter, constitute compound filter structure；50:50 wide-band couplers are connected with the input terminal of isolator；The output end of isolator and 90:10 wide-band couplers are connected, wavelength division multiplexer and 90:10 wide-band couplers, which are connected, constitutes annular chamber, and 90:10 wide-band couplers carry out 2 μm of twin wavelength laser outputs.
Description
Technical field
The present invention relates to a kind of, and the 2 mu m waveband dual wavelength interval of all optical fibre structure based on compound multiple-mode interfence filter is adjustable
Humorous laser belongs to laser manufacturing technology field, and it is all which can be applied to Microwave photonics, remote sensing, laser radar etc.
It is multi-field.
Background technology
2 mu m waveband optical fiber lasers are one of the laser technologies of most foreground at present, in laser medicine, gas detection, from
It is had a wide range of applications by space optical communication etc..The dual wavelength fibre laser of 2 mu m wavebands is operated in more because it is in microwave
Photonic propulsion, optical device context of detection possess unique advantage and are gradually paid close attention to by people.
Chinese patent " dual-wavelength tunable thulium-doped fiber laser ", Publication No. CN101859975, as shown in Figure 1, should
Apparatus structure is as follows：
Dual-wavelength tunable mixes rust optical fiber laser, is focused by the first pumping source 1, the second pumping source 2, the first pump light saturating
Mirror 3, the second pump light condenser lens 4, the first dichronic mirror 5, the second dichronic mirror 6, thulium doped fiber 7, output end laser collimator lens
8, feedback end laser collimator lens 9, the first reflective volume Bragg grating VBGl 10, the second reflective volume Bragg grating
VBG2 11 and broadband medium film high reflection mirror 12 form.It is poly- that the first pump light is sequentially placed in the horizontal optical path of first pumping source 1
Focus lens 3, the first dichronic mirror 5 mix rust optical fiber 7, the second dichronic mirror 6, the second pump light condenser lens 4 and the second pumping source 2；Face
Output end laser collimator lens 8 are placed on the vertical optical path of the first dichronic mirror 5；On vertical optical path towards the second dichronic mirror 6
It is placed with reflection end laser collimator lens 9, reflective volume Bragg grating 10, reflective volume Bragg grating 11 and broadband medium
Film high reflection mirror 12.Two volume Bragg grating VBG1 10 and VBG2 11 are used as resonator surface reflecting element, Jie therein
Plasma membrane speculum 12 helps to realize the angle tuning of VBG as auxiliary element.The technical solution uses two directional pump knot
Structure, by two volume Bragg grating VBG1 10 and VBG2 11 adjustings, finally obtaining the adjustable 50nm in dual wavelength interval.
However, since 2 mu m waveband dual wavelength fibre lasers use volume Bragg grating structure, the property of volume Bragg grating
It can be limited by preparing grating technique, to limit dual wavelength interval tuning range, and grating cost is higher, is unfavorable for dual wavelength
The development of optical fiber laser.Meanwhile the design of non-all optical fibre structure so that optical fiber needs the free space with various functions device
Coupling, this just needs to increase a certain number of lens and light path alignment regulating mechanism, so it is easily by external environmental interference, practicality
Property is poor.
Invention content
The present invention is shorter in order to solve dual wavelength interval in 2 mu m waveband dual wavelength fibre laser of the prior art, easily by outer
The defect of boundary's interference, it is proposed that a kind of 2 μm of dual wavelength intervals of all optical fibre structure based on compound multiple-mode interfence filter are tunable
Laser, obtained twin wavelength laser output minimum interval 3nm, largest interval 80nm, and Side mode suppressing is higher, about 60dB, wave
Long output is stablized, and tuning is easy, manufacturing cost is low.
The present invention adopts the following technical scheme that：
The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber, characterized in that the laser is by two pole of laser
Pipe pumping source, fiber amplifier, wavelength division multiplexer, thulium doped fiber, 50:50 wide-band couplers, multiple-mode interfence filter, isolator
With 90:10 wide-band couplers form；Laser diode pumping source connects with fiber amplifier, fiber amplifier output end and wavelength-division
The ends a of multiplexer are connected, and the ends c of wavelength division multiplexer are connected with thulium doped fiber one end, the thulium doped fiber other end and 50:50 broadband couplings
The ends d of clutch are connected, and 50:The ends f of 50 wide-band couplers are connected with multiple-mode interfence filter one end, and 50:The g of 50 wide-band couplers
End is connected with the multiple-mode interfence filter other end, to make Sagnac rings be cascaded with multiple-mode interfence filter, constitutes compound filter
Structure；50:The ends e of 50 wide-band couplers are connected with the input terminal of isolator；The output end of isolator and 90:10 wide-band couplers
The ends k be connected, the ends b and 90 of wavelength division multiplexer:The ends h of 10 wide-band couplers, which are connected, constitutes annular chamber, and 90:10 wide-band couplers
The ends i carry out 2 μm of twin wavelength laser outputs.
Described 90:First output end i of 10 wide-band couplers is 10% output end, and second output terminal h is 90% output end.
The beneficial effects of the invention are as follows：
Dual wavelength minimum can be obtained in the 2 mu m waveband thulium-doped fiber lasers that output dual wavelength interval of the present invention is tunable
It is spaced 3nm, the stabilized lasers output of largest interval 80nm.Tuning range (80nm) is the best result (double wave found at present
Long interval tuning range 50nm) 1.6 times.The existing non-all -fiber of 2 mu m waveband dual wavelength fibre laser is overcome, easily by the external world
Environmental disturbances, tuning range is narrow, the higher feature of cost.First, the tunable twin wavelength laser output of 2 mu m wavebands can be in Microwave photonics
There is relatively broad application prospect with fields such as optical device detections.Secondly, the present invention is filtered using Sagnac rings and multiple-mode interfence
Device cascades, and obtained composite filter generates the tunable laser output of dual wavelength interval, and dual wavelength interval tuning range is big, Bian Mo
Inhibit than high.Finally, the present invention uses all optical fibre structure, and loss is low, and performance is stablized, and is easy to integrated with fibre system.And cost
It is relatively low, there is higher cost performance.
Description of the drawings
Fig. 1 is prior art dual wavelength thulium-doped fiber laser schematic diagram.
The dual wavelength intervals of the present invention Fig. 2 are adjustable thulium-doped fiber laser structural schematic diagram.
Fig. 3 is stress correlation multiple-mode interfence filter construction schematic diagram of the present invention.
Fig. 4-7 is the adjustable spectrogram in dual wavelength interval of the present invention.
Specific implementation mode
The present invention is described in further details below in conjunction with the accompanying drawings.
As shown in Fig. 2, the 2 adjustable thulium-doped fiber lasers in mu m waveband dual wavelength interval, by the laser that wavelength is 1565nm
Diode pumping source 13, erbium-doped fiber amplifier 14,1560/2000nm wavelength division multiplexers 15 ("/" indicate " and "), single doped cladding layer
The 50 of thulium optical fiber 16,2 mu m wavebands:The isolator of 50 wide-band couplers 17, stress correlation multiple-mode interfence filter 18,2 mu m wavebands
19, the 90 of 2 mu m wavebands:10 wide-band couplers 20 are formed by connecting loop laser resonance cavity.
Laser diode pumping source 13 connects with erbium-doped fiber amplifier 14, sets pump power to 30dBm.Er-doped light
The output end of fiber amplifier 14 is connected with the ends a of wavelength division multiplexer 15, and pump light is injected into annular chamber.Wavelength division multiplexer 15
The ends c be connected with 16 one end of thulium doped fiber, therefrom generate 2 μm of gain signals.The other end of thulium doped fiber 16 and 50:50 broadbands
The ends d of coupler 17 are connected, and 50:The ends f of 50 wide-band couplers 17 are connected with 18 one end of multiple-mode interfence filter, and 50:50 broadbands
The ends g of coupler 17 are connected with 18 other end of multiple-mode interfence filter, to make 18 grades of Sagnac rings and multiple-mode interfence filter
Connection constitutes compound filter structure, and double wave is realized by torsion to multiple-mode interfence filter 18 in compound filter structure and pressing
The control of long interval 3nm-80nm outputs.50:The ends e of 50 wide-band couplers 17 are connected with the input terminal of isolator 19, to protect
Individual event operating of the optical signal in resonant cavity is demonstrate,proved.The output end of isolator 19 and 90:The ends k of 10 wide-band couplers 20 connect.
The ends b and 90 of wavelength division multiplexer 15：The ends h of 10 wide-band couplers 20 are connected, and 90:The ends i of 10 wide-band couplers 20 are 10% end,
Laser output is carried out, the ends h are 90% end, provide light feedback.Ring cavity structure optical fiber laser is consequently formed, each device connection is equal
Using fused fiber splice.
As shown in figure 3, the structure of multiple-mode interfence filter 18 is：Multimode fibre 18-1 is directly embedded into optical fibre rotator 18-3
V-groove in, optical fiber locker 18-4 setting locks multimode fibre 18-1 in the both sides optical fibre rotator 18-3, rotary screw
18-2 is arranged above optical fibre rotator 18-3 applies stress to multimode fibre 18-1, and rotatable optical fibre rotator 18-3 is turned round
Bent multimode fibre 18-1 changes multimode fibre 18-1 effective lengths, to change interference peak, realizes tunable filtering；
As shown in figs. 4-7, when pump power is set as 30dBm, pass through multiple-mode interfence filter 18 in compound filter structure
Torsion and pressing realize control to polarization state, to realize the control exported to dual wavelength interval 3nm-80nm.90:10 is wide
The ends i laser with coupler 20 is measured using 2 mu m waveband fibre optic spectral analyzers and 2 mu m waveband light power meters.
Claims (2)
1. the 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber, characterized in that the laser is by laser diode
Pumping source (13), fiber amplifier (14), wavelength division multiplexer (15), thulium doped fiber (16), 50:It is 50 wide-band couplers (17), more
Mode interference filter (18), isolator (19) and 90:10 wide-band couplers (20) form；Laser diode pumping source (13) and light
Fiber amplifier (14) connects, and fiber amplifier (14) output end is connected with the ends a of wavelength division multiplexer (15), wavelength division multiplexer (15)
The ends c be connected with thulium doped fiber (16) one end, thulium doped fiber (16) other end and 50:The ends d of 50 wide-band couplers (17) are connected,
50:The ends f of 50 wide-band couplers (17) are connected with multiple-mode interfence filter (18) one end, and 50:The ends g of 50 wide-band couplers (17)
It is connected with multiple-mode interfence filter (18) other end, to make Sagnac rings be cascaded with multiple-mode interfence filter (18), constitutes multiple
Close filter structure；50:The ends e of 50 wide-band couplers (17) are connected with the input terminal of isolator (19)；The output of isolator (19)
End and 90:The ends k of 10 wide-band couplers (20) are connected, the ends b and 90 of wavelength division multiplexer (15):The h of 10 wide-band couplers (20)
End, which is connected, constitutes annular chamber, and 90:The ends i of 10 wide-band couplers (20) carry out 2 μm of twin wavelength laser outputs.
2. the 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber according to claim 1, feature exist
In：Described 90:First output end i of 10 wide-band couplers (20) is 10% output end, and second output terminal h is 90% output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510726091.1A CN105390911B (en) | 2015-10-30 | 2015-10-30 | The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510726091.1A CN105390911B (en) | 2015-10-30 | 2015-10-30 | The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105390911A CN105390911A (en) | 2016-03-09 |
| CN105390911B true CN105390911B (en) | 2018-09-28 |
Family
ID=55422888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510726091.1A Active CN105390911B (en) | 2015-10-30 | 2015-10-30 | The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105390911B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866069B (en) * | 2016-04-20 | 2018-11-27 | 北京信息科技大学 | A kind of gas componant test macro based on tunable optical fiber laser |
| CN107248692B (en) * | 2017-05-19 | 2020-01-14 | 武汉理工大学 | Ultra-narrow linewidth wavelength-adjustable composite cavity optical fiber laser |
| CN110459937B (en) * | 2018-05-08 | 2021-03-23 | 华为技术有限公司 | Laser device |
| CN109103737A (en) * | 2018-10-31 | 2018-12-28 | 深圳技术大学（筹） | A kind of tunable middle infrared Raman optical fiber laser of broad band wavelength |
| CN109597090B (en) * | 2018-12-13 | 2023-10-03 | 武汉万集信息技术有限公司 | Multi-wavelength laser radar ranging device and method |
| CN110907400A (en) * | 2019-05-28 | 2020-03-24 | 天津工业大学 | Gas detection device based on micro-channel polarization-maintaining optical fiber Sagnac interference structure |
| CN110212398A (en) * | 2019-06-05 | 2019-09-06 | 华南理工大学 | A kind of single frequency optical fiber laser of the wide tunable based on multimode interference effect |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100957133B1 (en) * | 2007-12-11 | 2010-05-11 | 한국과학기술연구원 | Multiwavelength fiber laser apparatus including coupled cavities and oscillation method of multiwavelength laser |
| CN101859975B (en) * | 2010-06-12 | 2012-08-15 | 徐州师范大学 | Dual-wavelength tunable thulium-doped fiber laser |
| CN102842845B (en) * | 2012-09-11 | 2014-02-05 | 哈尔滨工程大学 | Chaotic laser controller |
| CN104577674B (en) * | 2014-12-30 | 2017-06-16 | 长春理工大学 | 2 mu m waveband wideband adjustable narrow linewidth multi-wavelength optical fiber lasers |
-
2015
- 2015-10-30 CN CN201510726091.1A patent/CN105390911B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105390911A (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105390911B (en) | The 2 adjustable thulium-doped fiber laser in mu m waveband dual wavelength interval of all -fiber | |
| CN100444480C (en) | Ring tunable single-frequency single-polarization fiber laser | |
| CN102709798B (en) | Erbium-doped optical fiber laser for optical fiber grating acoustic emission sensing system | |
| CN106253040B (en) | A kind of mode locked fiber laser system by graphene speculum wavelength switching | |
| CN201984180U (en) | Fiber Fabry-Perot tunable filter | |
| CN109787074A (en) | A kind of single mode narrow linewidth optical fiber laser based on double fiber coupling rings and saturated absorbing body | |
| CN110212398A (en) | A kind of single frequency optical fiber laser of the wide tunable based on multimode interference effect | |
| CN103531994A (en) | Same-bandwidth pumping single-frequency optical fiber laser using erbium-doped quartz optical fiber as gain medium | |
| CN105652378B (en) | Optical circulator | |
| CN207217993U (en) | A kind of multi-wavelength frequency multiplication fiber laser device of wavelength-division multiplex | |
| CN102227043A (en) | Linearly polarized light fiber laser based on polarization maintaining fiber annular lens | |
| CN100588056C (en) | Single-frequency single-polarization liner cavity ytterbium-doping optical fiver laser | |
| CN112838466B (en) | Switchable and tunable multi-wavelength fiber laser | |
| CN104078827A (en) | Multi-wavelength erbium-doped fiber laser with multiple tuning functions | |
| CN107370015A (en) | A kind of multi-wavelength frequency multiplication fiber laser device of wavelength-division multiplex | |
| CN103368045A (en) | Narrow-linewidth single-frequency fiber laser based on all-fiber slow-light element | |
| CN103731210B (en) | A kind of multifunctional unit device for ASE optical fiber source | |
| CN100446358C (en) | Linear tunable single-frequency single-polarization fiber laser | |
| CN103441414A (en) | Dual-wavelength fiber laser based on phase-shift sampling gratings | |
| CN202210616U (en) | Tunable multi-wavelength fiber laser based on 2-degree angle SMFBG | |
| CN103515836B (en) | Dual-wavelength annular cavity single frequency optical fiber laser | |
| CN109638625A (en) | Multi-wavelength tunable all-fiber pulse laser and system | |
| CN210379755U (en) | Single longitudinal mode laser based on micro-nano optical fiber annular junction and testing device | |
| CN102610988B (en) | Dual-wavelength fiber laser | |
| CN101478112A (en) | Optical fiber laser pump protecting apparatus and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |